| Opovo to Masquefa | 965.62 mi (1,554.01 km) |
| Opovo to Matadepera | 952.97 mi (1,533.66 km) |
| Opovo to Mazarron | 1,235.11 mi (1,987.72 km) |
| Opovo to Meco | 1,238.79 mi (1,993.63 km) |
| Opovo to Medina del Campo | 1,297.56 mi (2,088.21 km) |
| Opovo to Medina Sidonia | 1,492.40 mi (2,401.79 km) |
| Opovo to Mejorada del Campo | 1,245.86 mi (2,005.02 km) |
| Opovo to Meliana | 1,124.75 mi (1,810.11 km) |
| Opovo to Mengibar | 1,339.88 mi (2,156.33 km) |
| Opovo to Merida | 1,431.37 mi (2,303.57 km) |
| Opovo to Miajadas | 1,410.99 mi (2,270.77 km) |
| Opovo to Mieres | 1,299.42 mi (2,091.22 km) |
| Opovo to Miguelturra | 1,314.42 mi (2,115.35 km) |
| Opovo to Mijas | 1,426.98 mi (2,296.49 km) |
| Opovo to Miranda de Ebro | 1,171.07 mi (1,884.66 km) |
